4.3 Bio 2 Study Guide

Question 1

DNA

Answer 1

Double Stranded, Double Helix, A, T, C, G, Deoxyribose, OH or Hydroxl

Question 2

RNA

Answer 2

SIngle Stranded, A, U, C, G, Ribose, H,

Question 3

RNA and DNA differences

Answer 3

A, C, G, base Pairs, same major parts. Phosphate backbone, Hydrogen Bonds

Question 4

Transcription

Answer 4

When a DNA genetic sequence is copied (transcribed) to make an RNA molecule.

Question 5

Different parts of a Eukaryotic gene

Answer 5

Promoter, Enhancer/silencer, Exons, Introns

Question 6

Promoter

Answer 6

-The Starting point for transcription
-Must enkargetic promotors contain “TATA”
-Signals transcription factors and RNA polymerase attach

Question 7

Enhancer/silencer

Answer 7

-Additional binding site for transcription factors
-Controls how much RNA comes from a gene
-Acts as a switch

Question 8

Exons

Answer 8

-Sequences that will be present in the mRNA

Question 9

Introns

Answer 9

-Will be spliced out an removed

Question 10

Alternative Splicing

Answer 10

-Edit out introns
-Only happens in Eukaryotes